.home{
    display: flex;
    height: 30px;
    border-bottom: 1px solid #000;
}
.home-header{
    width: 20px;
    height: 100%;
    line-height: 30px;
    margin-left:5px;
}
.home-body{
    flex: 1;
    height: 100%;
}
ul{
   margin: 0 auto;
 
}
li{
     float: left;
   list-style: none;
   width: 50px;
   line-height: 30px;
  margin-right: 20px;
}
li:hover a{
    color: red;
border-bottom: 1px solid red;
}
.home-footer{
    width: 20px;
    height: 100%;
    line-height: 30px;
    margin-right:5px;
}